A fractured axle shaft with a star-shaped fracture pattern indicates that the cause of the failure is related to:

A) bending stress
B) torsional stress
C) shock load
D) lubrication failure

Star-Shaped Fracture

A type of break or crack in a material, characterized by lines radiating from a central point, resembling a star.

Bending Stress

The internal stress induced in a material when subjected to external forces causing it to bend, crucial in engineering design to prevent failure.

Torsional Stress

Stress that results from an applied torque or twisting force on a material, potentially leading to distortion or failure.